. Heredity and evolution in plants. Heredity; Plants. THE EVOLUTION OF PLANTS (187s) lield the opposite opinion. Hill and de Fraine (1908-1910) are among the recent protagonists for the hypothesis that dicotyledons are the more primitive. One of the most recent studies is that by Bucholz^ who ex-. J G Fig. 104.—Development of stem tip and cotyledons in Pinus Bank- siana. Dotted line represents plerome of root-tip; shaded area, meristem of stem tip; E, I, J, K, fusing cotyledons. (After Bucholz.) amined the embryos of pine, spruce, larch, juniper, balsam fir, cedar of Lebanon, and others. Many
. Heredity and evolution in plants. Heredity; Plants. THE EVOLUTION OF PLANTS (187s) lield the opposite opinion. Hill and de Fraine (1908-1910) are among the recent protagonists for the hypothesis that dicotyledons are the more primitive. One of the most recent studies is that by Bucholz^ who ex-. J G Fig. 104.—Development of stem tip and cotyledons in Pinus Bank- siana. Dotted line represents plerome of root-tip; shaded area, meristem of stem tip; E, I, J, K, fusing cotyledons. (After Bucholz.) amined the embryos of pine, spruce, larch, juniper, balsam fir, cedar of Lebanon, and others. Many instances of the fusion of the primordia of cotyledons were found, but no evidence of cotyledonary splitting. This fusion has resulted in reducing the number of cotyledons, and, in ' Bucholz, John T. Studies concerning the evolutionary status of poly- cotyledony. Am. Journ. Bot. 6 : 106-119. March, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's Son & Co.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectplants, bookyear1920
